“…[1][2][3][4] At present, thermoelectric materials are widely used in cooling technologies, in energy-efficient motors in the automotive industry, in biomedicine (for example in biothermal batteries for powering pacemakers), in photovoltaics, and in various military, aerospace, and other applications. [5][6][7][8][9] To be competitive compared with other energy sources, thermoelectric devices should be characterized by high values of certain performance parameters, the most important of which is the dimensionless figure of merit ZT, defined as…”